Home › CBSE Class 11 (Arts) › Economics › Use of Statistical Tools › Spending classes of width 40 from 0 to 200 hold …
Spending classes of width 40 from 0 to 200 hold 5, 20, 40, 30, 5 families. Mean?
ARs 110
BRs 104
CRs 120
DRs 100
Answer & Solution
Correct answer: B. Rs 104
Midpoints 20, 60, 100, 140, 180 give a sum of fx of 10,400, and 10,400 divided by 100 families is 104.
Related questions
Standard deviation measures variation about which average?Which ratio of standard deviation to mean is dimensionless?The standard deviation of repeated sample means is called what?Variance is the average of which quantities?Why is standard deviation easier to interpret than variance?The standard deviation is the square root of which measure?In a normal distribution, what share lies within one standard deviation?A data set has a high standard deviation. What does this show?